Beading and the like



1,632,277 c. DE-SOUTTER BEADING ND THE LIKE June 14,1927.

'Filed Jan.15, 1926 Patented June 14, 1927.

UNITED STATES 1,632.27? PATENT oer-ace.

CHARLES DESOUT'IER, OF LONDON, ENGLAND.

IBEADING AND THE LIKE.

Application filed January 15, 1926, Serial No. 81,532, and. in Great Britain January 22, 1925.

This invention relates to headings and the like, and has for its object to provide beadings which can readily be applied to the edges of sheet material such as sheet metal, to provide a finish and/ or reinforcement for such material, especially where the edges are of curved or irregular outline.

Beadings formed and applied according to the invention are particularly suitable for the edges of the buckets or equivalent parts of artificial limbs formed from sheet metal and adapted to receive the stumps of the limbs. These buckets are of irregular formation and each has to be Shaped and fitted according to the particular stump on which it is to be used and it is essential that the finishing and reinforcing beading applied to the irregular edge of the otherwise finished bucket should in no way de form such bucket.

According to the invention the beading is formed from a wire or rod of ductile metal or metal which can be rendered ductile. This is shaped in cross section to receive the edge of the sheet so as to leave a flush unbroken surface at the joint, partly formed by one surface of the sheet and partly by the surface of the head. The head has an interrupted flange or a series of lugs preferably formed integrally therewith, by which it is riveted or otherwise secured to the sheet, the heads of the rivets on the sheet side preferably being countersunk and flush.

In order that the invention may be better understood it will now be described with reference to the accompanying drawing in which:-

Fig. 1 is an elevation of a sheet metal bucket for an artificial leg with a beading constructed and applied according to one method of carrying the invention into effect.

Fig. 2 shews to an enlarged scale a section through the beading and edgeof the sheet metal to which it is applied in ac cordance with the method shewn in Fig. 1 and at a certain stage in the manufacture.

Fig. 3 shows similar view to Fig. 2 in the completed stage.

Fig. 4.- shews a method of jointing the beading.

Figs. 5 and 6 shew in elevation and side elevation another method of jointing.

Fig. 7 shews a plan of two other forms of joint.

Fig. 8 shews a beading bent in opposite curves.

In the drawings a the bucket formed from sheet metal preferably an aluminium alloy. This is shaped to take the particular stump with which it is to be used leaving a desired irregularly curved upper edge Z) which is preferably given a slight bevel as shewn in Figs. 2 and 3. The beading is shaped as shewn in cross section at Fig. 2 and comprises a somewhat circular part 0 having lugs (Z formed integrally therewith, the lugs forming what may be regarded as an interrupted flange. The lugs (Z are spaced apart as shewn leaving gaps e between them and have apertures f for rivets or the like. The beading comprising the circular part 0 and lugs Z presents on one side a fiat surface ending in a step or projection g.

The metal from which the beading is made should be ductile or able to be rendered ductile. It is preferred to use an aluminium alloy which can be annealed'and which after a certain period. resumes its normal hardness.

It will be realized that the ductile beading can easily be bent to any required irregular curve such for example as shewn in Fig. 8 and in applying the beading to the bucket edge one end thereof is riveted in position with the lug cl on the outside and the step or projection 5 against the bevelled edge 6 (Fig. 2). The beading is now bent to conform to a portion of the edge I) and another rivet applied and so on until the heading is shaped to the edge 5 when it is cut off to be jointed to the first mentioned riveted end, the whole of the lugs then being riveted to the bucket by rivets k. The step or projection g is now rolled or hammered or otherwise acted upon to bring it to engage the bevelled edge Z) and present a flush surface at the joint as shewn in Fig. 3.

Beading joints can be made in any desired manner for example as shewn in Fig. 4, Where the ends of the circular parts 6 are drilled to take a uniting pin 72. In Figs.

. 5 and 6 the ends of the heading are formed into circular projections m having bevelled ends it the two projections being encircled by a sheet metal clip coming flush with and forming a continuation of the beading and having attaching lugs s. Fig. 7 shews in plan bevelled and lapped joints in the heading united by flush rivets.

What I claim and desire to secure by Letters Patent in the United States of America is 1. Beading for an edge of sheet material comprising a rod or Wire having a longitudinal cut in one side'to receive the edge of the sheet to leave a flush unbroken surface at the joint partly formed by one surface of the sheet and partly by the surface or the heading, and also having a flange extending therefrom and the inner surface of which serves to bear against the outer sursion of the outer side of said out.

2. In combination With a heading as in claim 1, sheet material having one edge engaged in said out, said edge and the corresponding side of said out being beveled.

8. Beading as in claim 1, in which the flange is provided with spaced lugs.

In Witness whereof I aflix my signature.

' CHARLES DESOUTTER. 

